In accents that distinguish between foot and strut, the vowel of foot is a more lowered vowel [ɤ̈],[4] particularly in the north[6]

The schwa of better may be different from that of above in some accents; the former may be pronounced as [ɜ], the same vowel as that of bus[7]

The schwi tends to be supplanted by an /ɛ/ in final closed syllables, e.g. brightest/ˈbɾəi.tɛst/. The uncertainty over which vowel to use often leads to 'hypercorrections' involving the schwa, e.g. programme is often pronounced /ˈproː.ɡrəm/[2]

Most other long monophthongs are similar to that of Received Pronunciation, but words with the RP /əʊ/ are sometimes pronounced as [oː] and the RP /eɪ/ as [eː]. An example that illustrates this tendency is the Abercrave pronunciation of play-place[ˈpleɪˌpleːs][10]

In northern varieties, /əʊ/ as in coat and /ɔː/ as in caught/court may be merged into /ɔː/ (phonetically [oː]).[2]

Aside from lexical borrowings from Welsh like bach (little, wee), eisteddfod, nain and taid (grandmother and grandfather respectively), there exist distinctive grammatical conventions in vernacular Welsh English. Examples of this include the use by some speakers of the tag questionisn't it? regardless of the form of the preceding statement and the placement of the subject and the verb after the predicate for emphasis, e.g. Fed up, I am or Running on Friday, he is.[14]

In South Wales the word "where" may often be expanded to "where to", as in the question, "Where to is your Mam?". The word "butty" ("byti" in Welsh orthography, probably related to "buddy"[citation needed]) is used to mean "friend" or "mate"[17]

There is no standard variety of English that is specific to Wales, but such features are readily recognised by Anglophones from the rest of the UK as being from Wales, including the (actually rarely used) phrase look you which is a translation of a Welsh language tag.[14]

The word "tidy" has been described as "One of the most over-worked Wenglish words" and can have a range of meanings including - fine or splendid, long, decent, and plenty or large amount. A "tidy swill" is a wash involving at least face and hands.[18]

Spellings are almost identical to other dialects of British English. Minor differences occur with words descended from Welsh which aren't Anglicised as in many other dialects of English, e.g. in Wales the valley is always "cwm", not the Anglicised version "coombe". As with other dialects of British English, -ise endings are preferred, i.e. "realise" instead of "realize". However, both forms are acceptable.

The decline of Welsh and the ascendancy of English was intensified further during the Industrial Revolution, when many Welsh speakers moved to England to find work and the recently developed mining and smelting industries came to be manned by Anglophones. David Crystal, who grew up in Holyhead, claims that the continuing dominance of English in Wales is little different from its spread elsewhere in the world.[19]

While other British English accents have affected the accents of English in Wales, influence has moved in both directions. In particular, Scouse and Brummie (colloquial) accents have both had extensive Anglo-Welsh input through migration, although in the former case, the influence of Anglo-Irish is better known.

"Anglo-Welsh literature" and "Welsh writing in English" are terms used to describe works written in the English language by Welsh writers. It has been recognised as a distinctive entity only since the 20th century.[20] The need for a separate identity for this kind of writing arose because of the parallel development of modern Welsh-language literature; as such it is perhaps the youngest branch of English-language literature in the British Isles.

While Raymond Garlick discovered sixty-nine Welsh men and women who wrote in English prior to the twentieth century,[20] Dafydd Johnston thinks it "debatable whether such writers belong to a recognisable Anglo-Welsh literature, as opposed to English literature in general".[21] Well into the nineteenth century English was spoken by relatively few in Wales, and prior to the early twentieth century there are only three major Welsh-born writers who wrote in the English language: George Herbert (1593–1633) from Montgomeryshire, Henry Vaughan (1622–1695) from Brecknockshire, and John Dyer (1699–1757) from Carmarthenshire.

Welsh writing in English might be said to begin with the fifteenth-century bard Ieuan ap Hywel Swrdwal (?1430 - ?1480), whose Hymn to the Virgin was written at Oxford in England in about 1470 and uses a Welsh poetic form, the awdl, and Welsh orthography; for example:

O mighti ladi, owr leding - tw haf

At hefn owr abeiding:

Yntw ddy ffast eferlasting

I set a braents ws tw bring.

A rival claim for the first Welsh writer to use English creatively is made for the poet, John Clanvowe (1341–1391).